Transmission properties of one-dimensional symmetric ternary structures of metamaterials and dielectric materials with two different configurations

Abstract

In this work, we have investigated the tunable transmission properties of a one-dimensional ternary periodic structure designed with meta- and dielectric-materials in two different configurations. To the study the optical properties of considered periodic structure, we have used the transfer matrix method. The two configurations of considered periodic structure show tunable transmission properties with change in the type of configuration, number of layers, and incident angle of the electromagnetic wave. It is noted that the broadband width and the number of peaks and transmittance increase with an increase in the incident angle, where the peaks becomes more confined in a narrow region. An increase in number of unit cells reduces the transmission in the peaks. Comparing the order of the symmetry, we find that the transmissions in the peaks are more in the second sequence as compared to the first one, and hence the second one is more suitable for multichannel filters. On the basis of the results, the proposed structures can be used in the large variety of opto-electronic and photonic applications, including multichannel filter, broadband reflectors, and switches.